Home / 55,413.40-83,047.20-39,812.80

Finding the Fourth Proportional to 55,413.40, 83,047.20 and 39,812.80

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Solution

The fourth proportional to 55,413.40, 83,047.20 and 39,812.80 is: 59,666.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,413.40 : 83,047.20 = 39,812.80 : x
  2. Step 2: Convert to fraction form
    55,413.40/83,047.20 = 39,812.80/x
  3. Step 3: Cross multiply
    55,413.40x = 83,047.20 × 39,812.80
  4. Step 4: Simplify right side
    55,413.40x = 3,306,341,564.16
  5. Step 5: Solve for x
    x = 3,306,341,564.16/55,413.40
  6. Step 6: Final answer
    x = 59,666.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.